Nozzle



Nov. 7, 1944.

.J. E. FERGUSON ET AL NOZZLE Fild Dec. 26, 1942 2" Sheets-Sheet 1 Nv-.7, 1944 4 J. E. FERGUSON ET AL 2,362,433

NOZZLE V F'iled Dec. 26, 1942 2 Sheets-Sheet 2 gvwwbow JE Trguson e C.Creerzy 'Pa tented Nov. 7, 1944 e y NOZZLE v John E. Ferguson and CecilW; McCreery, Muncie,

Ind., assignors to Owens-'Illlnois pany, a corporation of Ohio GlassCom- Application December 26, 1942, Serial No. 470,l54

7 Claims. (CL 299-73) Our invention relates 'to a novel form of nozzle,particularly adapted for use with and forming a part of an apparatuswhich may be used for expelling the atmospheric air from the separatesections of a hollow article and substituting dehydrated air or othergas preliminary to scaling said sections together. The invention asherein illus trated and described is particularly adapted for such usein the -manufacture of hollow building blocks', but is not limited tothis particular use.

An object of the present invention is to provide an improved form ofnozzle by which the atmospheric air may be removed substantiallycompletely from the interiors of the hollow sections of an article andsimultaneously replaced with gas supplied through the nozzle as thesections are being brought together, preliminary to thesealingoperation.

Other objects of the invention will appear hereinafter.

The Construction herein illustrated, comprises an apparatus providedwith ourimproved form of nozzle and adapted for bringing together andscaling the complementary sections of hollow i glass blocks, andreplacing the atmospheric air with dehydrated air or other gas while thesaid sections are being brought together. such apparatus issubstantially the same as th'at disclosed in our copending application,Ser. No. 433354 for Glass block dehydrating mechanism, filed March 4,1942. The present invention embodies certain modifications andimprovements in the blowing nozzle shown in said copending application.

Referring to the accompanying drawings:

Fig. 1 is a plan View of the machine.

Fig. 2 is asectional plan View of the air nozzle and its supportingmeans.

3 isa section through the nozzle at the adjusting the nozzle bothrotatively and lengthwise. e Fig.: 5 is a part-sectional elevation ofthe machine, parts being broken away. I r

The machineheroin shown comprises a carriage o on which are mountedscaling units arranged in an annular series and each comprising workholders in which the glass block sections are held while being broughttogether and sealed. The 'carriage is rotated intermittently 'step bystep'in a conventional manner to bring the units in succession t'oStations symmetrically arranged around the axis of rotation, includingan unloadjblock sections are placed on the machine, heating Stations, 3,4, and 5 at which devices H are pro-' vided for heating the blocks andsoftening-the edges which are' to be sealed together, and pa sealingstation 6 at which the blocks are brought rate from the mold carriage.This includes a post v or column IS to which'is attached an arm Hcarrying a plate !8 secured thereto by bolts !9. Abracket mounted on theplate l8 carries a horizontal arm '2l splined thereon for lengthwiseadjustment and secured in adjusted position by screw bolts 22. Thenozzle l5 is secured by a pin 24' on a shank 23 in the form of adetachable 25 rod', and a sleeve 24 having its exterior surface screwthreaded, is mounted on said shank and secured by a clamping nut 25. Thesleeve 24 extends freely through an opening in the arm 2l. clamping nuts26 threaded on the sleeve 24, clamp the nozzle to the arm 2| afteradjustment to any desired position. The post IS may be pivotally mountedand provided with an arm [B for Swinging the ,blower mechanism towardand from the carriage !0. i

Referring to Figs. 2 and 3,.the nozzle [5, which as shown, may be in theform of a somewhat flattened tube, approximately elliptical in crosssection, is closed at both ends and is provided with an integralinterior web 2'lextending lengthwise thereof and dividing the nozzleinto compartments 28 and 29. The web terminates a short' distance fromeach end'of the nozzle, thereby forming'passageways 30 providingcommunication between the compartments 28 and 29 while theweb serves asa baflle for directing the air which is passing through the nozzle. Afanshaped series of parallel slots 3! formed in the front face of thenozzle and extendinglengthwise `-5b ther'eof, provide discharge outlets.The dehydrated air orgas is supplied to the nozzle through a pipe 32'leading to a port 33 which opensinto the compartment 29 at afpointintermediate the and preferably about midway ing' station I, a loadingstation' 2 at which'` the between'the endsias'shownu 4 section B'. isbelow the nozzle,

At each end of the nozzle a screw threaded plug 36 is provided in athreaded opening extending through the wall of the nozzle. The innerends of the plugs project into the passageways 38 and restrict saidpassageways to an eXtent which is adjustably variable by adjusting theplugs inwardly or outwardly. These plugs provide a means for adj ustablyregulatng and equalizing distribution of the air flow. around the endsof the bafile 21. It has been found in practice that, due to slightirregularities in the cored-out interier passages of the nozzle, the airflow through the Slots 31, is seldom or never the same for any twocastings. By means ofgthe throt= tling plugs or screws 30% adjustmentsof the air flow are readily made to give the desired uniformity ofdistribution. t

The Construction of the nozzle as jt described, provides for an evendistribution of the air or gas and a substantially uniform discharge atall points along the nozzle, the gas being radiated from the nozzle andanned outwardly to enter the hollow block sections as indicated bybroken lines in Fig. 5. In this Inanner the atmosphe'ric air in saidsections is effectively blown out and replaced by the dehydrated air orother *gas fromthe nozzle while the latter is positioned between thesections of the block. It will be noted that the upper holder l2 withthe block section B moves in a plane above that 'of the nozzIe while thepath of the lower holder and block Thus during each indexing operationthe block sections which are approaching the 'scaling station& traversethe nozzle, passing respectively above and below the nozzle. When thecarriage is arrested at the scaling station, the nozzle is closelyadjacent to and extends along the side of the block sections. Theblowing of the dehydrated air preferably is commenced,` in the mannerhereinafter described, as the blower is brought into a position 'betweenthe separated block sections 'and is continued' until the carriage hasbeen arrestecl and the section B' moved' upward to or adjacent to theseali'ng position. I I

A nozzle of the Construction 'disclosed over comes diificultiesexperienced 'with the 'use of a nozzle having its outlet at one 'endthereof, and provides for a more satisfactory and eifective displacementof the atmospheric air and substitution of the dehydrated air oro'thergas. The nozle is rotatably adjustable about its longitudi- 'nal axs bymeans of a handle 34, the 'position of adjustment being indicated by ascale 35 (Fg. 4) A shield 36 (Fig. 5) is carried on 'the holder 13 inposition tobe interposed between the nozzle 'and the block section B' asthe latter moves 'upward and thereby prevents the direct impingement ofthe air against the -exterio'r surface of the glass. Undue cooling 'isthus prevented.

The mechanism for controlling'the 'supply of dehydrated air to-thenozzle |5 will now be -described. Referring to Fig. 1, .the air issupplied from any suitable source through -a pipe 31 to ia `controlvalve 38 from which the pipe 32 extends to the nozzle. The valve's isactuated by an air operated piston motor comprising a cylinder 39. Thepiston rod 4! is extended and formed with rack teeth to engage a pinion42 on the stern of the valve 38. .Air under pressure for Operating thepiston motor is supplied through an air pressure pipe 43 to a spoolvalve 44. Pressure pipes 45 and 46 lead from the valve 44 to the lowerand upper ends respectivel y of xhepat cylinder 39.

When air under pressure is supplied through the pipe 46 to the motorcylinder, the piston is lowered and the valve 38 opened for supplyingthe dehydrated air or gas to the nozzle.

Movement of the valve 44 into position thus to supply air through pipe46 is under the control of a poppet valve 41 which Controls the supplyof air under pressure from a pipe 48 to a pipe 49 leading to theva'1ve'44; The poppet valve 47 is normally opened mornentarily duringeach indexing movement of the carriage by means of I camlobe 58 or otheractuating device on the around the ends of the baffle wall and outwardlycarriage, there being a cam lobe for each head;

' positioned and timed to contact the valve stern 41' and thusactuatethe valve shortly before the indexing movement is completed. Thedehydrated air is thus discharged through the nozzle while the latter isdirectly between the block sections.

The valve 44 is reversed to cut oi the supply oi air to the nozzle,preferably just before the lower block section B' has reached itssealing position, such reversal being under the control of a poppetvalve SI. This valve includes a valve stem 52 (Fig. 5) in the path of aboss 53 which serves as a cam for opening the valve. This cam is mountedon a lifting frame 54 which carries the mold block holder !3. The valve5! has a stationary mounting on a .standard 55. When the valve 5! isopened by its cam, air pressure from a supply pipe 56 leading to thevalve is transmitted from the valve through a pipe 51 to the righthandend of the spool valve 44, thereby reversing it and causing a reversalof the motor piston 40,

whereby the valve 38 is closed.

Modifications may be resorted to within the spirit and scope of ourinvention.

We claim:

1. A nozzlein the form of a tube closed at both ends, a web within thenozzle extending lengthwise thereof and terminating short of said endsand thereby dividing the nozzle into compartments, passages connectingthe ends of said compartments, said nozzle having an inlet portintermediate its ends opening into one said com- 'part'ment, and formedwith outlet openings extending lengthwise of the-nozzle in the wall ofthe other compartment, said Web forming a baffie by which gas isdirected to the ends of the 'nozzle and distributed to said outlets, anda throttling device in the 'passageway at one end of 'thenozzla saidthrottling device being adjustable for adjusting the distribution of theflow to opposite ends of the nozzle.

2. A nozzlein the form' of 'a tube closed at both ends, a' web 'within'the noz'zle extending -lengthwise thereof and terminating short of saidends and thereby dividing'the nozzle into compa'rtments, `passagesconnecting 'the ends of said compartments, said nozzle having an :in'letport intermediateits ends opening into one said'compartment, and formedwith'outlet openings ex- 'tending lengthwise of the nozzle in the wallof the other compartmentgsaid web *forming a baffie by which gas isdirected to -the ends of the nozzle and distributed to said outlets, andthr'ottling plugs adjustably-mounted-in :the ends of 'the nozzle andadjustable to regulate the distribution of the flow. V

3. Apparatus comprising a nozzle for displacing atmospheric air andsubstituting another gas in the 'hollo'w sections of a glass block whichare to 'be sealed together, said nozzle being in the form of a straighttube 'of uniform size and shap'ein cross section substantiallythroughout its length, and having a rounded, convex front surface, saidtube being closed at both ends and 'ing atmospheric air and substitutinganother gas in the hollow sections of a glass block which are to besealed together, said nozzle being in the form of a. straight tube ofuniform size and shape in cross section substantially throughout itslength; and having a -rounded, convex front surface, said tube beingclosed at both ends and formed with outlet openings'through said surfaceand extending lengthwise thereof, said openings being positioned side byside in a group extending transversely of said convex surface, Wherebygas discharged from said openings is fanned outwardly in divergentdirections, said nozzle having an inlet port intermediate its ends, apressure pipe opening into the nozzle through said port through whichgas under pressure is transmitted to the nozzle, and a bame plate withinthe nozzle between said port and the outlets and arranged to direct thegases from said port to the ends of the nozzle and thence to saidoutlets, said baiile plate being extended lengthwise of the nozzlebeyond the outlet openings.

5. A nozzle in the form of a tube of uniform size and shape in crosssection substantially throughout its length and closed at both ends,

.a Web within the nozzle extending lengthwise transversely of theno'zzle, whereby gas discharged from said openings is fanned outwardly,said web being in a position to form a baflie by which gas suppliedthrough said inlet port is directed to the ends of the nozzle anddistributed to said outlets.

,6. A nozzle in the form of a tube of uniform size and shape' in crosssection substantially throughout its length and closed at both ends, aWeb within the nozzle extending lengthwise thereof and terminating nearsaid ends and dividing the nozzle into separate compartments incommunication only at the end portions of the nozzle, said nozzle havingan inlet port intermediate its ends opening into one said compartment,the outer wall of the other said compartment having a convex surfaceformed with elongated slits extending lengthwise of the nozzle andproviding discharge openings through said convex surface, said slits'being positioned side by side in group form and with the group ofoutlets extending transversely of said convex surface, whereby gasdischarged from the nozzle through said outlets is fanned outwardly.

7. A nozzle in the form of a tube of unitorm i size and shape in crosssection substantially throughout its length and closed at both ends, aweb within the nozzle extending lengthwise thereof and terminating nearsaid ends and dividing the -nozzle into separate compartments incommunication only at the end portions of the nozzle, said nozzle havingan inlet port intermediate its ends opening into one said compartment,the outer wall of the other said compartment having a convex surfaceformed with elongated slits extending lengthwise of the nozzle andproviding discharge openings through said convex surface, said slitsbeing positioned side by side in group form and withrthe group ofoutlets extending transversely of said :convex surface, whereby gasdischarged from the nozzle through said outlets is fanned outwardly,said web being extended lengthwise of the nozzle to points beyond theoutlet openings, and adjustable means for adjustably varying andequalizing the distribution of gas supplied through said inlet port tothe ends of the nozzle.

JOHN E. FERGUSON. CECIL W. MCCREERY.

